Results 111 to 120 of about 1,253,726 (284)

Quantum gravity in three dimensions, Witten spinors and the quantisation of length

open access: yesNuclear Physics B, 2018
In this paper, I investigate the quantisation of length in euclidean quantum gravity in three dimensions. The starting point is the classical hamiltonian formalism in a cylinder of finite radius. At this finite boundary, a counter term is introduced that
Wolfgang Wieland
doaj  

Nanoscale Agglomeration Mechanisms of BF‐DPB:BPyMPM Donor–Acceptor Systems for Organic Optoelectronic Devices

open access: yesAdvanced Functional Materials, EarlyView.
The intermolecular and molecule‐substrate interactions and resulting molecular assembly of the OLED and OPV donor and acceptor molecules BF‐DPB and BPyMPM are investigated on different single crystalline substrates using high‐resolution scanning probe microscopy.
Milena Merkel   +8 more
wiley   +1 more source

Interfacial Contact Engineering Enables Giant‐Performance Semiconductor Nanomembrane Optoelectronic Devices

open access: yesAdvanced Functional Materials, EarlyView.
This work investigates modifying interfacial contacts in realizing giant‐performance semiconductor nanomembrane optoelectronics. Strategies, including surface reaction and buffer layer work‐function modulation, are explored to boost the Schottky barrier. An emerging material of YbOx is utilized for near‐ideal Ohmic contact.
Yibo Zhang   +5 more
wiley   +1 more source

Solitonic sectors, conformal boundary conditions and three-dimensional topological field theory [PDF]

open access: yesarXiv, 2000
The correlation functions of a two-dimensional rational conformal field theory, for an arbitrary number of bulk and boundary fields and arbitrary world sheets can be expressed in terms of Wilson graphs in appropriate three-manifolds. We present a systematic approach to boundary conditions that break bulk symmetries. It is based on the construction, by `
arxiv  

General boundary quantum field theory: Foundations and probability interpretation [PDF]

open access: yesAdvances in Theoretical and Mathematical Physics, 2008
30 pages, 5 figures, LaTeX; v2: typos corrected, footnote and remark added, references added/updated; v3: more typos corrected; v4: with corrections of the published ...
openaire   +3 more sources

Quantum Quenches of Conformal Field Theory with Open Boundary

open access: yes, 2023
5+11 pages, 3+2 ...
Liu, Xinyu   +4 more
openaire   +2 more sources

Advances in Radiative Heat Transfer: Bridging Far‐Field Fundamentals and Emerging Near‐Field Innovations

open access: yesAdvanced Functional Materials, EarlyView.
This review synthesizes the evolution of radiative heat transfer, emphasizing the transition from far‐field to near‐field regimes. Traditional frameworks, such as Planck's law, are revisited alongside modern innovations like fluctuational electrodynamics. Applications span nanoscale thermal management, energy harvesting, and thermophotovoltaic systems.
Ambali Alade Odebowale   +6 more
wiley   +1 more source

Boundary string current & Weyl anomaly in six-dimensional conformal field theory

open access: yesJournal of High Energy Physics, 2019
It was recently discovered that for a boundary system in the presence of a background magnetic field, the quantum fluctuation of the vacuum would create a non-uniform magnetization density for the vacuum and a magnetization current is induced in the ...
Chong-Sun Chu, Rong-Xin Miao
doaj   +1 more source

A simple topological quantum field theory for manifolds with triangulated boundary [PDF]

open access: yesarXiv, 2009
We construct a simple finite-dimensional topological quantum field theory for compact 3-manifolds with triangulated boundary.
arxiv  

Quantum field theory on global anti-de Sitter space-time with Robin boundary conditions [PDF]

open access: yesarXiv, 2020
We compute the vacuum polarization for a massless, conformally coupled scalar field on the covering space of global, four-dimensional, anti-de Sitter space-time. Since anti-de Sitter space is not globally hyperbolic, boundary conditions must be applied to the scalar field.
arxiv  

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